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2 vulnerabilities found for pyopenssl by pyca
CVE-2026-27459 (GCVE-0-2026-27459)
Vulnerability from cvelistv5
Published
2026-03-17 23:34
Modified
2026-08-25 12:05
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Summary
pyOpenSSL is a Python wrapper around the OpenSSL library. Starting in version 22.0.0 and prior to version 26.0.0, if a user provided callback to `set_cookie_generate_callback` returned a cookie value greater than 256 bytes, pyOpenSSL would overflow an OpenSSL provided buffer. Starting in version 26.0.0, cookie values that are too long are now rejected.
References
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CVE-2026-27448 (GCVE-0-2026-27448)
Vulnerability from cvelistv5
Published
2026-03-17 23:24
Modified
2026-03-18 20:18
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-636 - Not Failing Securely ('Failing Open')
Summary
pyOpenSSL is a Python wrapper around the OpenSSL library. Starting in version 0.14.0 and prior to version 26.0.0, if a user provided callback to `set_tlsext_servername_callback` raised an unhandled exception, this would result in a connection being accepted. If a user was relying on this callback for any security-sensitive behavior, this could allow bypassing it. Starting in version 26.0.0, unhandled exceptions now result in rejecting the connection.
References
| URL | Tags | |
|---|---|---|
|
|
||
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